Koska, which is a well known brand name in Turkey, has recently opened its newest store right in the heart of the Sirkeci district. Proffering a dizzying selection of sweets from chocolate covered Turkish delight (lokum) to gummy bears, to baklava, to their most well known and popular item; helva. This large-scale retail establishment strives to be the one stop shop for all your sweet-tooth desires.
With a more European concept, Koska offers a hassle free shopping experience where most products are prepackaged and clearly priced with no haggling or asking for a specific amount from a store attendant. I highly recommend the pistachio helva but remember that the best one is the freshest so you should ask for square cut from the block at the counter rather then the prepackaged kind. The new location is on Ankara Caddesi just behind Hafiz Mustafa. Here is a map:
View Koska in a larger map